Equivalents for the Marelli spark plug U31A
Marelli U31A is an automotive spark plug — reach 15.2–19.0 mm, heat range hot. Compare its 159 equivalents and find the cheapest compatible plug: NGK, Bosch, Champion, Denso and more.
Technical information Marelli U31A spark plug
- Resistor
- no
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What can replace a Marelli U31A spark plug?
The Marelli U31A is interchangeable with: Bosch CH171, Champion W566, Denso DG005, Bosch CH184, Bosch CH271, Bosch GLP003. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Marelli U31A?
Reach 15.2–19.0 mm, Heat range Hot, Resistor no, Seat Flat (gasket)
Cross-references and specifications are provided for guidance only. The wrench size can vary by brand, and some data is inferred from the plug code or an equivalent reference. Always check the vehicle manufacturer's recommendation before buying and fitting.